WRC Logo
www.arrowheadultra.com

Arrowhead 135 mile Winter Ultramarathon

location_city International Falls

location_on Minnesota

flag United States

calendar_today 26 Jan, 2026

directions_run Running

language Official Website

Register

About the Event

Confront one of the 50 toughest endurance races on Earth at the Arrowhead 135 on January 26, 2026. This legendary winter ultra-marathon challenges athletes to bike, run, or ski 135 miles through the extreme cold and deep solitude of northern Minnesota's snowmobile trails. Starting in International Falls—the coldest city in the continental U.S.—the race is a profound test of self-sufficiency, where historically brutal temperatures and a sub-50% finish rate demand unwavering preparation. With a modest entry fee supporting vital charities, it attracts a dedicated global community of winter ultra-athletes seeking the ultimate human-powered challenge. More than a competition, it's a raw journey across a frozen wilderness, defined by strength, survival, and profound personal discovery.

Races Offered

135 Miler

Jan 26, 2026

straighten

Distance — 217.3K

terrain

Type — Trail running

timer

07:00

Weather Overview

These values represent the 3-year monthly averages for January in International Falls.

Temp (°C)
Feels Like (°C)
thermostat -16.0° / -8.3°
wb_sunny -21.7° / -13.6°
Wind (km/h)
Humidity (%)
air 12.5 /
water_drop 79.5%

About International Falls

Scenic view of

International Falls is a city in Minnesota. The city is nicknamed "Frostbite Falls" or "Icebox of the Nation". According to Forbes magazine, it is the coldest city in the Lower 48 United States.

Read more launch

Hotels & Places to Stay

Nearby Races

46th Annual Freeze Yer Gizzard Blizzard Run™ 5K & 10K

46th Annual Freeze Yer Gizzard Blizzard Run™ 5K &…

location_on International Falls, Minnesota, US

calendar_today Jan 24, 2026

Carey Lake Ski Challenge

Carey Lake Ski Challenge

location_on Hibbing, Minnesota, US

calendar_today Feb 14, 2026

Nordic North Stars - Winter 2026

Nordic North Stars - Winter 2026

location_on Duluth, Minnesota, US

calendar_today Jan 12, 2026

Norpine Fat Bike Classic

Norpine Fat Bike Classic

location_on Lutsen, Minnesota, US

calendar_today Jan 09, 2026

Recommended for You

Hand-picked events we think you’ll love.

Our pick
Run Manatee - Rye Preserve 5K -2026

Nov 21, 2026

Run Manatee - Rye Preserve 5K -2026

The RUN Manatee 5k series offers THREE adventures to celebrate ONE community. Participants will discover Manatee County…

Read more
Our pick
Turkey Trails - Sioux Falls

Nov 28, 2026

Turkey Trails - Sioux Falls

Join us for the annual Turkey Trails 5k/10k!  A fun, Thanksgiving-themed event that is perfect for the whole family.The…

Read more
Our pick
Candy Cane Course- Lincoln

Dec 13, 2026

Candy Cane Course- Lincoln

Join us for the annual Candy Cane Course 5k/12k!  A fun, Christmas-themed event that is perfect for the whole family.Th…

Read more
Our pick
Space Coast Triathlon and Duathlon

Mar 21, 2027

Space Coast Triathlon and Duathlon

WE ARE NOW OFFERING AN AQUABIKE DIVISION! Triathlon Information:Join us for the annual Space Coast Triathlon, held in …

Read more

Get race deals & updates

Subscribe to our newsletter for curated race picks and discounts.